'41 Shock Links
 

Pulled the rear end on the '41 coupe (early model year version) to swap out 3.78 gears for 3.25. Love it on the Interstate; final verdict depends on whether or not 284" flathead can get over Afton Mountain at 50 mph in high gear.

Also put Bendix brakes on the front. Took the opportunity to replace all four shock links (dog bones), as several were loose. I put 4" all around. Mac's show 4" for the front, and I subsequently discovered that Mac's lists 4.75" for front and rear on a '41. The car had 4" on front and 4 3/4" on rear, but I am not sure they were original. Am I risking damage to the Houdaile shocks if I go over something that causes the rear axel to go full extended? That is, is it possible that using a dog bone 3/4" shorter than stock would allow the rotor on the shaft to hit the reacting block inside the top of the housing?

Re: '41 Shock Links
 

All the dog bones measure 4-3/4 on my '41 coupe, hope that helps.

Re: '41 Shock Links
 

If you want to make it as Henry built it then 4 3/4" on the front and 4" on the back.
One must always remember that the repop suppliers don't do a lot of research... they are in the market to sell parts. It is up to each of us to do the proper research.

Re: '41 Shock Links
 

Time for me to get the parts bible!

Re: '41 Shock Links
 

Just be aware that the so called "Green Bible" offers listings of REPLACEMENT parts. In other words: parts that will fit and function. Are the 'correct"? Well, in so far as they will fit and function. Not necessarily will they be concourse correct.
Lots of guys have yet to learn that parts books are NOT necessarily a good resource for a proper restoration.